Thermodynamic analysis of erosion effects of silver-based metal oxide contact materials

Weise, Wolfgang; Braumann, P.; Wenzl, H.

doi:10.1109/holm.1996.557185

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…This effect should be considered in the context of the work of Weise and others [23]. By means of numerical models, work showed that the sublimation of CdO ( C) consumed thermal energy from the electrode, thus cooling it and limiting its erosion.…”

Section: A Materials Transfer Over 5000 Operationsmentioning

confidence: 97%

Contacts materials performances under break arc in automotive applications

Morin

Jemaa

Jeannot³

et al. 2000

IEEE Trans. Comp. Packag. Technol.

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New materials for electrical contacts have been developed recently, based on AgFeOx, AgFeRe, AgZnO, and doped AgSnO 2 . The work described here aims at evaluating the material transfer characteristics, and the contact resistance behavior, of these materials under break arc in automotive applications (14 V dc, 30-40 A). A comparison is made between these new materials and four reference materials: Ag, AgCdO, AgSnO 2 , and AgNi.Four of the new materials appear very promising: AgZnO, AgFeOx, doped AgSnO 2 io 6, and EMB8. These combine the good transfer performance of AgCdO in inductive load, i.e., in long cathodic arc, with that of AgSnO 2 in resistive load, i.e., in short anodic arc. For all materials, contact resistance is much higher in inductive load (7 m) than in resistive load (1 m). An explanation of the different behaviors of these materials is attempted by means of metallographic analysis.

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Section: A Materials Transfer Over 5000 Operationsmentioning

confidence: 97%